„Variation of Mechanical Characteristics for Thin Wall Tubes Processed in Ultrasonic Field“, Ann_UGAL_MMS, Bd. 32, Nr. 2, S. 18–22, Nov. 2009, Zugegriffen: Nov. 02, 2026. Verfügbar unter: https://ojs.ugal.ro/index.php/mms/article/view/3030